Measurement of the angular power spectrum of the cosmic microwave background is most often based on a spherical harmonic analysis of the observed temperature anisotropies. Even if all-sky maps are obtained, however, it is likely that the region around the Galactic plane will have to be removed due to its strong microwave emissions. The spherical harmonics are not orthogonal on the cut sky, but ...

The discharge-flow technique coupled with UV-absorption spectroscopy has been used to study the production of dichlorine trioxide, Cl2O3 , from the reaction between ClO and OClO radicals. The absorption cross section of Cl2O3 was determined to be (1.44 0.10) 10 17 cm molecule 1 at lmax 1⁄4 267 nm (all errors reported are two standard deviations of the statistical error). The equilibrium constan...

In this paper I compare inter-thread communication methods: blocking queue and LMAX Disruptor without synchronization according to a number of threads (CPU cores) and consumer rate. The research is carried out using a multiprocessor machine with Non Uniformed Memory and Oracle Java Runtime Environment. I determine if processing on many multi-core CPUs with NUMA is faster than on single multicor...

Target audience: Researchers interested in optimizing High-Angular Resolution Diffusion Imaging acquisitions. Introduction: Diffusion MRI methods based on high-angular resolution diffusion imaging (HARDI) acquisitions provide a good trade-off between acquisition time and accuracy of the estimated diffusion or fiber orientation distribution function (dODF/fODF) [1-3]. Recently, an extensive eval...

The game of Twenty Questions has long been used to illustrate binary source coding. Recently, a physical device has been developed that mimics the process of playing Twenty Questions, with the device supplying the questions and the user providing the answers. However, this game differs from Twenty Questions in two ways: Answers need not be only “yes” and “no,” and the device continues to ask qu...

We compute the cosmic microwave background (CMB) bispectrum induced by the evolution of the primordial density perturbations, including for the first time both temperature and polarization using a second-order Boltzmann code. We show that including polarization can increase the signal-to-noise by a factor 4 with respect to temperature alone. We find the expected signal-to-noise for this intrins...

We investigate a stochastic multi-armed bandit problem in which the forecaster’s choice is restricted. In this problem, rounds are divided into lock-up periods and the forecaster must select the same arm throughout a period. While there has been much work on finding optimal algorithms for the stochastic multi-armed bandit problem, their use under restricted conditions is not obvious. We extend ...

OBJECTIVE To investigate whether drivers of convertible cars are exposed to excessive noise levels. STUDY DESIGN Prospective. SETTING Data were collected along a main United Kingdom highway. SUBJECTS AND METHODS Seven cars were included within the study, encompassing a range in cost, power, and comfort. A calibrated, integrating noise meter was used to measure average noise levels (Leq dB...

The influence of length on work production was investigated for rat papillary muscles using the work loop technique. Active and passive length-force relationships were first determined under isometric conditions and the length for maximum force production (Lmax) was derived. Starting from different lengths within the physiological range, a series of work loops was generated using the stimulatio...

This study investigates the effects of cycle frequency, strain and length on work and power output of isolated rainbow trout (Oncorhynchus mykiss) ventricular preparations using the work loop technique. These effects are discussed in the context of the whole heart using analogies with heart rate, stroke volume and end-diastolic volume. Power output was dependent on cycle frequency, increasing t...